JP2775672B2 - Oval large dome and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oblong large dome whose inside can be used for multiple purposes and a method of constructing the same.

[0002]

2. Description of the Related Art Conventionally, there have been various proposals for a large dome, and as a large-sized roof structure having an open / close roof, there is also known a structure in which an open / close roof is erected between a pair of parallel arch beams (for example, Japanese Patent Publication No. 1-223237 and Japanese Patent Publication No. 2-58647), the conventional example in which an open / close roof is erected between a pair of parallel arches is separately provided for a large span in order to secure stability. Means are needed.

[0003]

SUMMARY OF THE INVENTION The object of the present invention is to provide a clear and rational load treatment, a large rigidity, a high stability even in a large span, and an oval large-size which can be easily and safely fitted with a roof. It is to provide a dome and its advantageous construction method.

[0004]

The basic feature of the large oval dome according to the present invention is that a pair of main keel arch members in the long side direction and a pair of sub keel arch members in the short side direction are assembled in a crossbeam. A cable is stretched between both ends of the main keel arch member and the sub-keel arch member, and the bundle material projecting downward at each intersection position of the main keel arch member and the sub-keel arch member with the cable is moved upward. To form a keel-shaped keel truss,
The point is that a roof is constructed by installing a roof on the keel truss.

[0005] In the oval large dome of the present invention,
An openable roof at the top of the keel truss, a fixed roof at the hem,
Providing rails for running and guiding the open / close roof on the main keel arch member, providing a roof support along the entire circumference of the roof, and structurally separating the roof and roof support from internal facilities And providing a roof wall with a shear wall.

Next, the structural feature of the method of constructing a large oval dome according to the present invention is that when constructing the large oval dome having the above-mentioned basic structure, the main keel arch member and the sub keel A temporary vent support extending to each intersection point of the arch member is erected, and using this temporary vent support, a cross beam assembly of a main keel arch member and a sub-keel arch member is formed, and the cross beam assembly is formed. The point is to keep the cable in a stable state until the work of stretching the cable is completed.

In the method for constructing a large oval dome according to the present invention, first, at both ends in the long side direction of the dome,
Forming an assembly of the end of the main keel arch member and the sub-keel arch member, and then bridging the central portion of the main keel arch member to form a crossbeam assembly of the main keel arch member and the sub-keel arch member; Is good.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings showing the outline of one embodiment of the large oval dome of the present invention, reference numeral 1 denotes a main keel arch member extending in the longitudinal direction of the large dome having an oval plane shape.
2 is a sub keel arch member extending in the short side direction.

Each pair of the main keel arch member 1 and the sub keel arch member 2 is assembled in a cross-girder shape, and cables 3 and 4 are stretched between both ends of the main keel arch member 1 and the sub keel arch member 2 respectively. At the same time, the cables 3 and 4 support the bundle member 5 protruding downward at each intersection of the main keel arch member 1 and the sub-keel arch member 2 so as to be pushed upward, thereby forming a crossbeam-shaped keel truss 6. Then, a roof is erected on the keel truss 6 to form the roof of the dome.

In the illustrated embodiment, a roof 9 is constructed by providing an open / close roof 7 on the top of a keel truss 6 and a fixed roof 8 on a hem, respectively. The location is not limited to only the top, and all the roofs may be fixed roofs without opening and closing roofs.

In the case of the embodiment shown, the main keel arch member 1 is a three-dimensional truss beam having a rhombic cross section, its slope is relatively gentle, and the upper half thereof extends outward beyond the inner and outer boundaries of the dome. It extends and runs on the open / close roof over the entire length of the upper chord.
A guide rail is provided.

The sub-keel arch member 2 is a three-dimensional truss beam having a W-shaped cross section, and its gradient is the main keel arch member 1.
Is smaller than the gradient of the main keel arch member 1 and is crossed at the same level as the lower half of the main keel arch member 2.

On both sides of the openable roof 7 which moves along the main keel arch member 2 while being sandwiched between the upper halves of the main keel arch member 2 on both sides, a multi-roller type traveling device and a horizontal guide are provided. A roller and a pin gear for driving are provided, and a pin rack gear with which the pin gear engages outside the rail is provided on the upper chord of the main keel arch member 2.

The opening and closing range of the opening / closing roof 7 varies depending on the type of the competition to be performed in the dome, but in the case shown in the drawing, the sub keel arch members 2 are opened to the side beyond the horizontal position. It has become.

The roof support section 10 for supporting the roof section 9 configured as described above is provided along the entire circumference of the roof section 9, and a flow of force from the roof section 9 to the roof support section 10 is provided. In order to clarify, the roof support section 10 from the roof section 9 should be structurally separated from the internal facility 11 such as a stand.

The roof support portion 10 is composed of a vertical force support portion formed by precast concrete boundary columns and beams at the inner and outer boundaries of the dome, and a horizontal force support portion provided outside the dome via a brace material. In this case, it is preferable to provide a shear wall on the horizontal force support.

Next, in the method of constructing a large oval dome according to the present invention, when constructing the roof 9 of the large oval dome described above, each of the main keel arch member 1 and the sub keel arch member 2 is taken from the ground surface. Four temporary vent posts extending to the intersection point are erected, and the main keel arch members 1 and 1 and the sub keel arch members 2 are used by using the temporary vent posts.
The two cross-girder assemblies are formed, and the cross-girder assemblies are held in a stable state until the work of stretching the cables 3 and 4 is completed.

The above-mentioned cross-girder assembly is formed by forming the main keel arch members 1 and 2 at both ends in the longitudinal direction of the dome.
An assembly (end assembly) of the end of the sub keel 1 and the sub keel arch member 2 is formed first, and then the central part of the main keel arch member 1, 1 is erected between the sub keel arch members 2, 2. It is better to do it in order.

The above-mentioned end assembly is divided into blocks of an appropriate size, each block is assembled at a low position near the ground surface, and the blocks are pulled up on a erected vent support and connected by a so-called block construction method. Preferably formed,
In this case, it is necessary to provide an appropriate number of temporary vent posts in addition to the above-mentioned four temporary vent posts, and the temporary vent posts are removed after the end assembly is formed.

The above-mentioned four temporary vent posts hold the above-mentioned cross-girder assembly in a stable state until the work of stretching the cables 3 and 4 is completed.
It is needless to say that it is necessary to install such that it does not hinder the work of stretching.

When forming the assembly of the end portions of the main keel arch members 1 and 1 and the sub keel arch member 2, the end portions of the main keel arch members 1 and 1 are connected by a fixed roof therebetween. It may be assembled.

[0022]

As described above, the oval large dome of the present invention is configured as described above, and has a structure in which most of the roof load is borne by a keel truss in which string beams are assembled in a cross-girder shape. Not only can the processing be carried out in a self-holding manner, the processing of the load is clear and rational, but also the rigidity is large, the stability is large even in a large span, and the roof can be easily and safely provided with the openable / closable roof.

The method of constructing a large oval dome according to the present invention is as described above. The method of constructing a temporary keel erected at each intersection position of a keel arch member forming a keel truss by utilizing the features of the roof structure. Since the roof is constructed using the vent strut for assembling the keel truss and stably maintaining the keel truss, work safety and efficiency can be sufficiently ensured.

[Brief description of the drawings]

FIG. 1 is a plan view of an example of an oval large dome according to the present invention.

FIG. 2 is a cross-sectional view in the long side direction.

FIG. 3 is a cross-sectional view in the short side direction.

[Explanation of symbols]

1: Main keel arch member, 2: Sub keel arch member, 3: Cable, 4: Cable, 5: Bundle, 6: Keel truss, 7: Openable roof, 8: Fixed roof, 9: Roof,
10: roof support, 11: internal facility.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI E04B 7/16 E04B 7/16 A E04H 3/14 E04H 3/14 C (72) Inventor Cornelis Alberts Maria Bos Wassenaar, The Netherlands City 2243 AC, Bakkeshhagenran 16 (58) Fields surveyed (Int. Cl. ⁶ , DB name) E04B 1/32 101 E04B 1/32 102 E04B 1/342 E04B 7/16 E04H 3/14

Claims (8)

(57) [Claims] 1. A pair of main keel arch members in a long side direction and a pair of sub keel arch members in a short side direction are assembled in a cross-girder shape, and a pair of main keel arch members and a sub keel arch member are provided between both ends of the main keel arch member and the sub keel arch member. A cable is stretched, and the cable is supported so as to push up the bundle material projecting downward at each intersection position of the main keel arch member and the sub-keel arch member to form a crossbeam-shaped keel truss, A large oval large dome, wherein a roof is constructed by installing a roof on the keel truss. 2. The large oval dome according to claim 1, wherein an openable roof is provided on the top of the keel truss and a fixed roof is provided on the hem. 3. The large oval dome according to claim 2, wherein a rail for running and guiding the open / close roof is provided on the main keel arch member. 4. The large oval dome according to claim 1, wherein a roof support portion is provided along the entire circumference of the roof portion. 5. The large oval dome according to claim 4, wherein the roof and the roof support are structurally separated from the internal facility. 6. The large oval dome according to claim 4, wherein an earthquake-resistant wall is provided on the roof support portion. 7. When the large oval dome according to claim 1 is constructed, a temporary vent support extending from the ground surface to each intersection of the main keel arch member and the sub keel arch member is erected, and the temporary vent support is provided. Utilizing the main keel arch member and the sub keel arch member to form a cross-girder assembly and maintaining the cross-girder assembly in a stable state until the cable stretching operation is completed. How to build a large dome. 8. An assembly of an end of a main keel arch member and a sub-keel arch member is formed at both ends of the dome in the long side direction, and a central portion of the main keel arch member is erected. 8. A crossbeam assembly of a main keel arch member and a sub keel arch member.
Construction method of the oval large dome described.